Re: [Xen-devel] Tagging Xen 4.0.0 first release candidate, 44-bit address space support

[Pasi Kärkkäinen <pasik@xxxxxx>]

On Tue, Jan 05, 2010 at 04:06:50PM +0000, Keir Fraser wrote:
> On 05/01/2010 16:00, "Alex Williamson" <alex.williamson@xxxxxx> wrote:
> 
> >> It's a bit late for 4.0.0 really. The lack of interest is probably the lack
> >> of people hitting the 43-bit limitation built into the current interface.
> >> Just about noone is anywhere near close to it.
> > 
> > Perhaps due to the lack of x86 processors supporting more than 40-bits
> > of physical address space that are currently on the market.  But we
> > know that's going to change fairly shortly and x86 will finally get
> > support for more than 1TB.  That opens the doors for hardware vendors
> > to create interesting configurations and maybe not worry so much about
> > compressing the address space into a contiguous block.  If Xen can't
> > support at least a 44-bit physical address space within the 4.x
> > lifetime, it could become a serious limiting factor.  It seems rather
> > shortsighted not to prepare for it now, especially given the
> > opportunity we have at a major version break.  Thanks,
> 
> If it's considered important we can hold up until next week.
> 

Any progress with this 44-bit address space support?

-- Pasi


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